Any Interchangeable 1 wire activation internal reg alternator available?

Some caveats on your "one wire." The CHARGE wire (output) path from the alternator to the battery MUST BE oversized and in excellent shape. This is because the voltage sensing is right there at the alternator. If the wire is "typical" of OEM old Mopars, it will be about a volt-and-a-half low at "the other end." (The battery)

You want an oversized charge wire for the same reason. For a 60A I'd use at least no8 wire